This 4-way ON-OFF module is to transmit the ON-OFF condition to a remote place wirelessly in time. When here the switch condition is ON, the output in the remote place is ON. When the local switch condition is OFF, the other terminal is OFF.

Features:

1. 4-way isolated input, high reliability and stability.

2. 4-way relay dry contact output, contact current is 220V, 5A.

3.Collocated with a wireless data module inside whose transmitting distance is about 2km-3km;

4.the working frequency 433MHz (450 or 470MHz also available ); (pls tell us what frequency you need ? )